1. Astronomical Institute, University of Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland
2. Institut für Erdmessung, University of Hannover, Schneiderberg 50, 30167 Hannover, Germany
3. Department of Geodesy and Geoinformation Science, Technische Universität Berlin, Strasse des 17. Juni 135, 10623 Berlin, Germany
4. German Research Centre for Geosciences, Telegrafenberg, 14473 Potsdam, Germany
5. Institute of Geodesy, Technical University of Graz, Steyrergasse 30/III, 8010 Graz, Austria
6. German Remote Sensing Data Center, Deutsches Zentrum für Luft-und Raumfahrt, Münchener Strasse 20, 82234 Wessling, Germany
7. Department of Terrestrial and Planetary Geodesy, Centre National d’Etudes Spatiales, Avenue E. Belin 18, 31401 Toulouse, France
8. Stellar Space Studies, Esplanade Compans Caffarelli, 31071 Toulouse, France
9. Lantmäteriet, Geodetisk Infrastruktur, Lantmäterigatan 2c, 80182 Gävle, Sweden
10. Geospatial Engineering, Newcastle University, G.15 Cassie Building, Newcastle NE1 7RU, UK
11. Geophysics Laboratory, University of Luxembourg, Rue Richard Coudenhove-Kalergi, 1359 Luxembourg, Luxembourg
12. NASA, Jet Propulsion Laboratory, 4800 Oak Grove Dr, Passadena, CA 91109, USA